Update README

README.md

@@ -4,16 +4,18 @@ This repo contains useful methods can be used in your daily development.
 ### Timebased stats for a period of time.
 You want to know most viewed products within 3 hours. Assume we have 3 buckets to store recent 3 hours views into them, here is a list
 
-| Hour One | Hour Two | Hour Three |
+| Hour 1:00 | Hour 2:00 | Hour 3:00 |
 | - | - | - |
 |P1: 0|P1: 13|p1: 9|
 |P2: 5|P2: 11|p2: 29|
 |P3: 7|P3: 0|p3: 0|
 |P4: 0|P4: 0|p4: 21|
 
-Now, we are at fourth hour, (assume it's 3:10), we can report a rank list.
+Now, we are at fourth hour, (assume it's 3:10), we can get a rank list at the end.
 
 1. P2: 45
-2. p1: 22
-2. p4: 21
-2. p3: 7
+1. p1: 22
+1. p4: 21
+1. p3: 7
+
+You can check the implementation under `examples/`.